Chemical Formulas and Ratios

Question 1

percent composition

Answer 1

divide partial mass of an element by the total mass of the compound

Question 2

hydrates

Answer 2

formed when water molecules are incorporated into the crystal lattice structure of a substance

Question 3

liquids on the periodic table

Answer 3

Bromine, Mercury

Question 4

gases on the periodic table

Answer 4

noble gases, nitrogen, oxygen, fluorine, chlorine, hydrogen

Question 5

coefficients in chemical equations

Answer 5

mole-mole ratios or conversions

Question 6

limiting reagents

Answer 6

the reactant the reactions will completely consume first

Question 7

1

Answer 7

mono

Question 8

2

Answer 8

di

Question 9

3

Answer 9

tri

Question 10

4

Answer 10

tetra

Question 11

5

Answer 11

penta

Question 12

6

Answer 12

hexa

Question 13

7

Answer 13

hepta

Question 14

8

Answer 14

octa

Question 15

9

Answer 15

nona

Question 16

10

Answer 16

decka

Question 17

12

Answer 17

dodecka

Question 18

synthesis reachtion

Answer 18

A + B > AB, AB + CD > ABCD

Question 19

decomposition

Answer 19

AB > A + B, ABC > AB + C

Question 20

combustion

Answer 20

reaction involving a hydrocarbon being burned in the presence of oxygen to produce carbon dioxide and water; CxHy + O2 > CO2(g) + H2O (l)

Question 21

single displacement

Answer 21

A + BC > B + AC

Question 22

double displacement

Answer 22

AB + CD > AD + CB

Question 23

acid base reaction (special double displacement)

Answer 23

acid reacts with a base to produce salt and water; HA(aq) + MOH > MA + H2O(l)